curl --request GET \
  --url 'https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey='

import requests

url = "https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey="

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey=', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey=",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey="

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey=")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://beaconcha.in/api/v1/slot/{slot}/proposerslashings?apikey=")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "status": "OK",
  "data": [
    {
      "block_index": 0,
      "block_root": "<string>",
      "block_slot": 138164,
      "header1_bodyroot": "0xf44039d2cc6c46ebee262c1484bc47db10516425a49e81f123505329562256d9",
      "header1_parentroot": "0x2415ce3a054b0d3f23226a4665fba92efe63c93063680b16ff1e491a73dd5b0c",
      "header1_signature": "0xa632f1c085234ef94ef4d1252fb5d9960f373471e5c266aa626c89d1db91302b4ace4fde93a4a5b79b29263b5b90d42f0d1df8f6b534666cd7750e8781d3af962b55656625f9464cf68305ff7e1185dc11955b8bc8273de30cd88c834860b0bc",
      "header1_slot": 138163,
      "header1_stateroot": "0x0d86b0b4fd08302b87b84983243b688d7cffb81a311d327bd4cbd04b73c806ce",
      "header2_bodyroot": "0xef23edd026b330949abfd2063aa48eb420a912294f73e8168e644d6bb603f187",
      "header2_parentroot": "0x2415ce3a054b0d3f23226a4665fba92efe63c93063680b16ff1e491a73dd5b0c",
      "header2_signature": "0xa805e609614fa2bd108ae47ea3b4474fac5241f7cde40470a022eeca2a242ea15669834713168bd3137118486c8b966a036f8e8c81329c332f459a32437967bf8fa2cc7631bb2507aa9173170470ef47739e792de9c78e3fde3c6e095f6d6faf",
      "header2_slot": 138163,
      "header2_stateroot": "0xf8e7fbb7df067101f6e85700d0413c63b509b164ee9cd15d310c397447caf4fd",
      "proposerindex": 38069
    }
  ]
}

{
  "status": "ERROR: <Message>",
  "data": null
}